Ms Ardern said it's still a major issue and "will continue to be so until we speak openly about the fact that it's a woman's decision when she chooses to have a family".

"It should not be something that's raised when her future career prospects are speculated on or even if she enters into a job opportunity or an interview. I absolutely believe we'll be combatting this for a little while to come but we need to front it and weed it out when it occurs."

Will the New Zealand Government take on climate refugees?

Ms Ardern said that unless dramatic changes are made, New Zealand is "at the front of seeing refugees as a result of climate change".

She said that the Government is considering ways that New Zealand could help those impacted by climate change in the Pacific.

"We're looking for ways to build in the responsibility we have on climate change and the way that we approach, potentially, climate change refugees in the future amongst our neighbours."